This is the CodeSystem that contains all the codes in Benefit Type (https://nrces.in/ndhm/fhir/r4/CodeSystem/ndhm-benefit-type) and Benefit Type (https://nrces.in/ndhm/fhir/r4/CodeSystem/ndhm-benefit-type). E.g. what you have to deal with if you get resources containing codes in either of them